package collection;

import java.util.ArrayList;
import java.util.List;

public class ListDemo1 {
    public static void main(String[] args) {
        List<String> list =new ArrayList<>();
        list.add("one");
        list.add("two");
        list.add("three");
        list.add("four");
        list.add("five");
        System.out.println("lit:"+list);
        //get
        String e=list.get(3);
        System.out.println(e);
        for (int i=0;i<list.size();i++){
            System.out.println(list.get(i));
        }
        System.out.println("----------------");
        //set
        list.set(2,"six");
        String old=list.set(1,"ooo");
        System.out.println(old);
        System.out.println(list);
        //for
        for (String s:list){
            System.out.println(s);
        }
        //for的
    }
}
